[stubs] Cleanup FixedArray copying builtin

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index f621df93b2a215e63b364f972583c4b3dc1abed4..c2714b6ca85fc20f86f9923b488bab98e058a69a 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -15705,6 +15705,10 @@ Maybe<bool> JSObject::HasRealNamedCallbackProperty(Handle<JSObject> object,
                                : Nothing<bool>();
 }
 
+int FixedArrayBase::GetMaxLengthForNewSpaceAllocation(ElementsKind kind) {
+  return ((Page::kMaxRegularHeapObjectSize - FixedArrayBase::kHeaderSize) >>
+          ElementsKindToShiftSize(kind));
+}
 
 void FixedArray::SwapPairs(FixedArray* numbers, int i, int j) {
   Object* temp = get(i);